Has anyone done this? I've got an A2 that I'd like to put a flattop on but can't find any A4 uppers. There is no shortage (today!) of M4 uppers, but those won't play nice with my A2 barrel unless I enlarge the feed ramps. I'm thinking it can't be that hard but figured I'd go fishing for first hand experience before I get out the files and go to town on it.
Thanks.
Thanks.
